1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * AD9523 SPI Low Jitter Clock Generator
5 * Copyright 2012 Analog Devices Inc.
8 #ifndef IIO_FREQUENCY_AD9523_H_
9 #define IIO_FREQUENCY_AD9523_H_
30 NONEREVERTIVE_STAY_ON_REFB,
38 * struct ad9523_channel_spec - Output channel configuration
40 * @channel_num: Output channel number.
41 * @divider_output_invert_en: Invert the polarity of the output clock.
42 * @sync_ignore_en: Ignore chip-level SYNC signal.
43 * @low_power_mode_en: Reduce power used in the differential output modes.
44 * @use_alt_clock_src: Channel divider uses alternative clk source.
45 * @output_dis: Disables, powers down the entire channel.
46 * @driver_mode: Output driver mode (logic level family).
47 * @divider_phase: Divider initial phase after a SYNC. Range 0..63
48 LSB = 1/2 of a period of the divider input clock.
49 * @channel_divider: 10-bit channel divider.
50 * @extended_name: Optional descriptive channel name.
53 struct ad9523_channel_spec {
55 bool divider_output_invert_en;
57 bool low_power_mode_en;
58 /* CH0..CH3 VCXO, CH4..CH9 VCO2 */
59 bool use_alt_clock_src;
61 enum outp_drv_mode driver_mode;
62 unsigned char divider_phase;
63 unsigned short channel_divider;
64 char extended_name[16];
67 enum pll1_rzero_resistor {
73 RZERO_USE_EXT_RES = 8,
76 enum rpole2_resistor {
94 enum cpole1_capacitor {
99 _CPOLE1_24_PF, /* place holder */
106 * struct ad9523_platform_data - platform specific information
108 * @vcxo_freq: External VCXO frequency in Hz
109 * @refa_diff_rcv_en: REFA differential/single-ended input selection.
110 * @refb_diff_rcv_en: REFB differential/single-ended input selection.
111 * @zd_in_diff_en: Zero Delay differential/single-ended input selection.
112 * @osc_in_diff_en: OSC differential/ single-ended input selection.
113 * @refa_cmos_neg_inp_en: REFA single-ended neg./pos. input enable.
114 * @refb_cmos_neg_inp_en: REFB single-ended neg./pos. input enable.
115 * @zd_in_cmos_neg_inp_en: Zero Delay single-ended neg./pos. input enable.
116 * @osc_in_cmos_neg_inp_en: OSC single-ended neg./pos. input enable.
117 * @refa_r_div: PLL1 10-bit REFA R divider.
118 * @refb_r_div: PLL1 10-bit REFB R divider.
119 * @pll1_feedback_div: PLL1 10-bit Feedback N divider.
120 * @pll1_charge_pump_current_nA: Magnitude of PLL1 charge pump current (nA).
121 * @zero_delay_mode_internal_en: Internal, external Zero Delay mode selection.
122 * @osc_in_feedback_en: PLL1 feedback path, local feedback from
123 * the OSC_IN receiver or zero delay mode
124 * @pll1_loop_filter_rzero: PLL1 Loop Filter Zero Resistor selection.
125 * @ref_mode: Reference selection mode.
126 * @pll2_charge_pump_current_nA: Magnitude of PLL2 charge pump current (nA).
127 * @pll2_ndiv_a_cnt: PLL2 Feedback N-divider, A Counter, range 0..4.
128 * @pll2_ndiv_b_cnt: PLL2 Feedback N-divider, B Counter, range 0..63.
129 * @pll2_freq_doubler_en: PLL2 frequency doubler enable.
130 * @pll2_r2_div: PLL2 R2 divider, range 0..31.
131 * @pll2_vco_div_m1: VCO1 divider, range 3..5.
132 * @pll2_vco_div_m2: VCO2 divider, range 3..5.
133 * @rpole2: PLL2 loop filter Rpole resistor value.
134 * @rzero: PLL2 loop filter Rzero resistor value.
135 * @cpole1: PLL2 loop filter Cpole capacitor value.
136 * @rzero_bypass_en: PLL2 loop filter Rzero bypass enable.
137 * @num_channels: Array size of struct ad9523_channel_spec.
138 * @channels: Pointer to channel array.
139 * @name: Optional alternative iio device name.
142 struct ad9523_platform_data {
143 unsigned long vcxo_freq;
145 /* Differential/ Single-Ended Input Configuration */
146 bool refa_diff_rcv_en;
147 bool refb_diff_rcv_en;
152 * Valid if differential input disabled
153 * if false defaults to pos input
155 bool refa_cmos_neg_inp_en;
156 bool refb_cmos_neg_inp_en;
157 bool zd_in_cmos_neg_inp_en;
158 bool osc_in_cmos_neg_inp_en;
161 unsigned short refa_r_div;
162 unsigned short refb_r_div;
163 unsigned short pll1_feedback_div;
164 unsigned short pll1_charge_pump_current_nA;
165 bool zero_delay_mode_internal_en;
166 bool osc_in_feedback_en;
167 enum pll1_rzero_resistor pll1_loop_filter_rzero;
170 enum ref_sel_mode ref_mode;
173 unsigned int pll2_charge_pump_current_nA;
174 unsigned char pll2_ndiv_a_cnt;
175 unsigned char pll2_ndiv_b_cnt;
176 bool pll2_freq_doubler_en;
177 unsigned char pll2_r2_div;
178 unsigned char pll2_vco_div_m1; /* 3..5 */
179 unsigned char pll2_vco_div_m2; /* 3..5 */
181 /* Loop Filter PLL2 */
182 enum rpole2_resistor rpole2;
183 enum rzero_resistor rzero;
184 enum cpole1_capacitor cpole1;
185 bool rzero_bypass_en;
187 /* Output Channel Configuration */
189 struct ad9523_channel_spec *channels;
191 char name[SPI_NAME_SIZE];
194 #endif /* IIO_FREQUENCY_AD9523_H_ */